Characteristics of H13 tool steel coatings by pulsed Nd:YAG laser cladding

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Proceedings titleTMS Annual Meeting
Conference142nd Annual Meeting and Exhibition: Linking Science and Technology for Global Solutions, TMS 2013, 3 March 2013 through 7 March 2013, San Antonio, TX
Pages201208; # of pages: 8
SubjectCarbon steel substrates; Dendritic structures; H13 tool steel; Hot-work tool steel; Phase identification; Plastic injection molding; Pulsed Nd:YAG laser; Tensile residual stress; Carbon steel; Coatings; Die casting; Exhibitions; Laser cladding; Protective coatings; Rapid solidification; Steel testing; Tool steel; Tribology; Wear resistance; X ray diffraction; Neodymium lasers
AbstractAISI H13 hot-work tool steel has a wide application for mold/die of die casting, hot forging, hot extrusion, hot stamping and plastic injection molding, due to its high toughness, high hot hardness and high thermal fatigue resistance. Laser cladding, a material additive technology, can be used to apply various functional coatings and to repair/reconfigure tool/die. H13 tool steel was successfully laser-clad on carbon steel substrates at room temperature. The microstructure of as-clad coating showed a refined dendritic structure due to fast cooling and rapid solidification. X-ray diffraction (XRD) phase identification revealed that the coating consisted of a majority of martensite phase plus certain amount of retained austenite phase (∼ 20 vol%). Tensile residual stresses were measured in the as-clad H13 coating. The average value of Vickers hardness in the as-clad coating is about 575 Hv0.05. Wear resistance evaluation using pin-on-disc sliding wear testing showed that the wear resistance of as-clad H13 steel coating was similar to or slightly better than that of hardened wrought H13 steel (HRC 54) plate under the wear test condition used in this study, but the wear mechanisms are significantly different.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); Automotive (AUTO-AUTO)
Peer reviewedYes
NPARC number21269854
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Record identifier706518ff-2353-46a1-a381-b5c40c450572
Record created2013-12-13
Record modified2016-05-09
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